Abstract
Coal is still widely used as the main fuel in the industry, especially the power generation industry (PLTU), cement plants and etc. Coal is a fossil fuel whose availability is thinning and its fires produce CO2 emissions that cause a rise in greenhouse gas (GHG) concentricity. On the other biomass is an alternative energy source that is abundant, including empty bunches of oil palm (TKKS), but has poor combustion properties compared to coal when burned directly. The properties of biomass burning can be improved by certain treatment, one of which is through the process of torrefaction. Biomass torrefaction has a calorific value equivalent to sub-bituminous coal B, so it has the potential to be used as an alternative fuel for coal. The purpose of this study was to determine the maximum temperature that occurs in the burner. In this study co-combustion was conducted on simulation of ANSYS program with powder system (pulverized combustion) because this type in recent decades is widely used in industry. In this study conducted a simulation on ANSYS to determine the temperature on the burner and the concentration of emissions produced. The results showed that the simulation of co-combustion burner burner showed the maximum temperature reached 970°C. The effect of burner and burner temperature in the form of swirl provides sufficient oxygen with more perfect combustion resulting in decreased concentration of CO2 emissions and low concentration of N2 due to higher nozzle temperature. High temperatures lower the concentration of SO2 in the burn chamber.Keyword: Co-combustion, pulverized co-combustion simulation, TKKS torrefaction, burner.
Highlights
Batubara hingga saat ini masih banyak digunakan sebagai bahan bakar utama di industri, kususnya industri pembangkit listrik (PLTU), pabrik semen dan lain sebagainya
The results showed that the simulation of co-combustion burner burner showed the maximum temperature reached 970°C
Segmented kinetic investigation on condensed KCl sulfation in SO2/O2/H2O at 523e1023
Summary
Deskripsi singkat co-combustion Co-combustion adalah proses pembakaran dua jenis bahan bakar berbeda dalam proses pembakaran yang sama, seringkali dioperasikan dalam ketel pembangkit uap. Biomassa sebagai pembakaran-improver jika dicampur dengan batubara untuk menurunkan suhu pembakaran dan meningkatkan daya bakar [9]. Transisi ini terutama disebabkan oleh menipisnya bahan bakar fosil dan masalah lingkungan seperti emisi gas rumah kaca (GRK) dan pelepasan unsurunsur yang berpotensi beracun melalui gas buang selama pembakaran batu bara. Hu et al [13] mengungkapkan bahwa penurunan emisi SO selama co-combustion juga bisa disebabkan oleh efek penangkapan oleh logam alkali dan alkali tanah dari biomassa melalui reaksi sulfasi. Dari beberapa penelitian co-combustion batubara dan biomassa TKKS tertorefaksi belum ada yang menggunakan dan memberikan informasi mengenai emisi yang ditimbulkan. Adapun yang memberikan informasi mengenai emisi co-combustion biomasa yang digunakan bukan menggunakan TKKS tertorefaksi, seperti yang dilakukan Zeyu dkk [15], biomasa yang digunakan adalah jerami gandum
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